Skip to main content
padlock icon - secure page this page is secure

Free Content Spatial distribution of Alitta virens and Clymenella torquata with respect to rigid boundaries in mud and sand

Download Article:
 Download
(PDF 2,120.9 kb)
 
Recent advances in understanding of sediment material properties and of burrowing mechanics suggest likely differences in the behavior of organisms burrowing in mud and sand. The path of least resistance in the mud may lead an infaunal organism to burrow along a rigid wall. By contrast, in sand, force chains may prevent a burrowing organism from reaching a rigid wall. Burrowing in mud occurs primarily by the propagation of cracks. Cracks, and hence burrows, tend to propagate along rigid walls. In sand, force chains comprise collections of particles that experience much more stress than their neighbors. Stress chains tend to terminate at walls where their high density may inhibit burrowing. To test for differing effects of mud and sand on the spatial distribution of infauna, proximity to a rigid wall of two polychaetes, Alitta virens and Clymenella torquata, was measured in sand and mud. For both species the cumulative density distribution of burrow distances from the wall showed significantly more burrows near the wall than expected in both mud and sand. However, in direct sampling experiments, the more mobile A. virens showed a greater tendency to burrow at the wall in mud than in sand and strong exclusion from the immediate vicinity of the wall in sand, whereas C. torquata did not show a significant difference in distance from the wall in sand versus mud. The wall effect may be weaker for C. torquata because its limited mobility makes it less likely to encounter a wall over the course of an experiment. Our results point to the need for quantitative assessment of biases of analytical devices that rely on rigid walls, such as optodes and sediment profile imaging cameras, and suggest a possible similar bias in animal distributions around natural analogs such as rock-sediment boundaries.
No References for this article.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: May 1, 2013

More about this publication?
  • We regret to announce that the Journal of Marine Research—one of the oldest peer-reviewed journals in American marine science—will cease publication with Volume 79 as of December 31, 2021. Therefore, the Journal of Marine Research is no longer accepting manuscript submissions, new subscriptions, or subscription renewals for 2022. All current paid subscriptions will be honored and accessible through March 2022. Back issues of all volumes since inception are available here and from the publisher's website.

    The Journal of Marine Research has published papers on physical, biological, and chemical oceanography vital to the academic oceanographic community for almost 80 years in the long and rich tradition of the Sears Foundation for Marine Research at Yale University. We thank our readers, authors, and reviewers for their interest and support.

  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Purchase The Sea
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more